Jules crollard



(No Model J. GROLLARD.

BOILER FEEDER. No. 404,346. Patented May 28, 1889.

n l 1 n m m m n u u f E E UNITED STATES PATENT ()FFICE.

JULES CROLLARD, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREDERICK AUSTIN, OFSAME PLACE. I

BOILER-FEEDER.

SPECIFICATION forming part of Letters Patent No. 404,346, dated May 28,1889.

Application filed December 17, 1888. Serial No. 293,895. (No model.)

To all whom it may concern.-

Be it known that I, 'JULEs CROLLARD, a citizen of the Republic ofFrance, residing at Chicago, in the county of Cook and State ofIllinois, have invented a certain new and useful Improvement inBoiler-Feeders, of which the following is a specification.

My invention relates to boiler-feeders of that kind in which water isdrawn into an elevated supply-tank by reason of a partial vacuum formedin the tank by the condensation of steam therein, and has for its objectto provide a simple, economical, and convenient apparatus for generalservice.

The stcanrpipe leading from the boiler to the watersupply tank isprovided at its end that is within the boiler with a suitablefloat-valve, whereby when the water lowers within the boiler a flow ofsteam into the supply-tank chamber can be automatically established.

In the drawings, Figure 1 represents in vertical central section thewater-supply tank and a portion of a boiler, the pipes and a tub intowhich the lower end of the tank supplypipe is introduced being mainlyshown in elevation. Fig. 2 is a view similar to the preceding figure andshows the float lowered. Fig. 3 shows a vertical section taken centrallythrough the upper valved end portion of the pipe which serves to supplythe tank with water, and also a section taken transversely through saidportion of the tank-supply pipe on line 3 3.

The boiler A may be of any suitable construction, and can be arranged inany convenient or desired way. The elevated watersupply tank B can alsobe supported in any suitable manner, but should be sufficiently remotefrom the boiler to prevent its becoming heated therefrom, it beingdesirable to keep the tank sufficiently cool to insure condensation ofthe steam therein. The water-supply pipe C is arranged to connect withthe supply-tank chamber, and is provided with a check or gravity valve,0, arranged to open toward the tank-chamber and to close when subject topressure within said chamber, whereby, while steam-pressure within thetank-chamber may close valve 0 of the watersupply pipe C, said valve canbe. automatically opened by atmospheric pressure when a partial vacuumis created within the tankchamber.

The feed-pipe D leads from the lower portion of the supply-tank andconnects with the lower portion of the boiler. Said feedpipe D isprovided with a suitable check or balance valve, as at d, which openstoward the boiler, so as to permit water to flow into the boiler when anexcess of pressure exists at the supply side of said valve. The feedpipeis also preferably provided with a cock, cl, at the delivery side of thevalve (1, so that should it become necessary to temporarily remove thevalve d said cock cl can be closed. The steam-pipe E leads from theupper portion of the boiler to the upper portion of the supply-tankchamber, and said pipe is within the boiler provided with an ordinary orsuitable float-valve, F, arranged to close the steampipe'when the waterwithin the boiler rises to a proper height, and, conversely, to open thesteam-pipe when the water sinks to some determined point. Then the floatvalve opens the steam-pipeE, steam from the boiler will be admitted intothe supply-tank chamber, wherein the steam-pressure will maintain valve0 in its normally-closed condition; but should there be at such time asupply of water within the supply tank its weight, added to saidsteam-pressure, will over-balance ,the pressure at the delivery side ofvalve d,

and hence open said valve, so as to permit the feed of water-throughpipe D to the boiler until the water within the boiler rises to asufficient height to cause the float-valve to close the steam-pipe E.The condensation of the steam within the supply-tank chamber will createa partial vacuum therein, and hence, should at such time the inlet endof the Water-supply pipe C be submerged in a body of waterfor example,in a suitable quantity of water within an open tub or other receptacle,G-the water will be forced by atmospheric pressure up through pipe C andinto the supply-tank, the check-valve 0 being at such time automaticallyopened by reason of the external atmospheric pressure being in excess ofany pressure within the tank. When the flow of water into thesupply-tank ceases, the supply-pipe valve 0 will close, and hence thetank will be in readiness for another discharge into the boiler. I canalso provide the steam-pipe E with an ordinary cock, e; but, if desired,such cock can be dispensed with, it beingobserved that for automaticwork the pipe E need only be provided with the floatvalve, and also thatthe feed-pipe I) need only be provided with the valve (Z.

hat I claim as my invention is- The combination, substantially ashereinbefore set forth, with a boiler, of the closed supply-tank 3, thesteam-pipe E, connecting the boiler with the supply-tank and provided

